21. Create a program to count the number of words in a string.
Required Input:
str = "Hello World"Expected Output:
Number of words = 2
Code In Cpp
#include <iostream>
#include <sstream>
#include <string>
int main() {
std::string str = "Hello World";
// Logic to count words
return 0;
}
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22. Write a program to sort an array in ascending order.
Required Input:
arr = {5, 3, 8, 1, 4}Expected Output:
Sorted Array = 1, 3, 4, 5, 8
Code In Cpp
#include <algorithm>
#include <iostream>
int main() {
int arr[] = {5, 3, 8, 1, 4};
// Logic to sort the array
return 0;
}
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23. Create a program to find the largest element in an array.
Required Input:
arr = {3, 5, 7, 2, 8}Expected Output:
Largest Element = 8
Code In Cpp
#include <iostream>
int main() {
int arr[] = {3, 5, 7, 2, 8};
// Logic to find the largest element
return 0;
}
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24. Write a program to find the average of an array of numbers.
Required Input:
arr = {4, 8, 6, 5}Expected Output:
Average = 5.75
Code In Cpp
#include <iostream>
int main() {
int arr[] = {4, 8, 6, 5};
// Logic to calculate the average
return 0;
}
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25. Create a program to count the occurrences of a character in a string.
Required Input:
str = "Hello", ch = 'l'Expected Output:
Occurrences of l = 2
Code In Cpp
#include <iostream>
#include <string>
int main() {
std::string str = "Hello";
char ch = 'l';
// Logic to count occurrences of ch in str
return 0;
}
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26. Write a program to find the second largest number in an array.
Required Input:
arr = {5, 3, 8, 1, 4}Expected Output:
Second Largest = 5
Code In Cpp
#include <iostream>
int main() {
int arr[] = {5, 3, 8, 1, 4};
// Logic to find the second largest number
return 0;
}
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27. Create a program to find the transpose of a 2D array.
Required Input:
2D array = {{1, 2}, {3, 4}}Expected Output:
Transpose =
1 3
2 4
Code In Cpp
#include <iostream>
int main() {
int arr[2][2] = {{1, 2}, {3, 4}};
// Logic to find transpose
return 0;
}
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28. Write a program to find the intersection of two arrays.
Required Input:
arr1 = {1, 2, 3, 4, 5}, arr2 = {4, 5, 6, 7, 8}Expected Output:
Intersection = {4, 5}
Code In Cpp
#include <iostream>
#include <vector>
int main() {
std::vector<int> arr1 = {1, 2, 3, 4, 5};
std::vector<int> arr2 = {4, 5, 6, 7, 8};
// Logic to find intersection
return 0;
}
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29. Create a program to calculate the sum of even numbers in an array.
Required Input:
arr = {1, 2, 3, 4, 5}Expected Output:
Sum of even numbers = 6
Code In Cpp
#include <iostream>
int main() {
int arr[] = {1, 2, 3, 4, 5};
// Logic to calculate sum of even numbers
return 0;
}
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30. Write a program to merge two sorted arrays.
Required Input:
arr1 = {1, 3, 5}, arr2 = {2, 4, 6}Expected Output:
Merged Array = {1, 2, 3, 4, 5, 6}
Code In Cpp
#include <iostream>
#include <vector>
int main() {
std::vector<int> arr1 = {1, 3, 5};
std::vector<int> arr2 = {2, 4, 6};
// Logic to merge the arrays
return 0;
}
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